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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Nash AI logo
Nash AI
Medium
Software Engineer Locked

Design real-time delivery tracking with async updates

This question evaluates designing scalable, fault-tolerant real-time delivery tracking systems, focusing on asynchronous event processing, out-of-orde...

System Design
3
0
43 people solved
Oct 21, 2025
Google logo
Google
Medium
Product Manager

Setting a Portfolio-Wide Product Strategy for Meta as Its Product Leader

Imagine you have just become head of product at Meta. What would you do in the role? Explain how you would size up where Meta's products stand today, ...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
7 people solved
Oct 18, 2025
Rippling logo
Rippling
Medium
Software Engineer

What was the hardest part of your project?

Behavioral question In a project deep dive, the interviewer asks: 1) “In this project, what was the hardest part (most challenging aspect) and why?” 2...

Behavioral & LeadershipProject Deep DiveFailure & Learning
20
0
162 people solved
Oct 17, 2025
Meta logo
Meta
Medium
Product Manager

Set Launch Goals and a North-Star Metric for Meta's Live Audio Rooms

You are the product manager for Audio Rooms, a newly launched Meta product. Assume it lets people host and join live, audio-only group conversations: ...

Analytics & ExperimentationMetrics & KPIs
0
0
6 people solved
Oct 14, 2025
Hard
Data Scientist Locked

Derive and regularize logistic regression

This question evaluates proficiency in logistic regression theory and regularization, GLM versus OLS assumptions, class imbalance handling and calibra...

Machine Learning
4
0
34 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Compute sample size and test duration

You will run a two-arm A/B test on a signup funnel. Given: baseline conversion p0 = 4.0%; you care about detecting a 10% relative uplift (p1 = 4.4%); ...

Statistics & Math
11
3
77 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Set membership fee under investment constraints

Streaming membership pricing vs. content investment Context You are designing a monthly membership for a streaming service. Producing original shows i...

Statistics & Math
5
0
81 people solved
Oct 13, 2025
Capital One logo
Capital One
Easy
Data Scientist

Compute monthly break-even subscribers

Break-even Analysis for a Subscription Streaming Service Context A streaming startup incurs monthly fixed costs and per-subscriber variable costs and ...

Statistics & Math
12
0
83 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Evaluate and prioritize Facebook Groups

This question evaluates product analytics, experimentation design, causal inference, KPI hierarchy and metric-definition skills, and quantitative prio...

Analytics & Experimentation
4
0
39 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Design experiment for fake accounts impact

Experiment Design: Removing Detected Fake Accounts and Measuring Causal Impact Context: You are designing an end-to-end experiment on a large, interac...

Analytics & Experimentation
3
0
62 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Design hashtag recommender with cold start

This question evaluates expertise in recommender-system design, feature engineering, ranking and learning-to-rank models, cold-start strategies, evalu...

Machine Learning
4
0
43 people solved
Oct 13, 2025
Amazon logo
Amazon
Hard
Data Scientist

Compare Tableau live vs extract and filters

Scenario You are building an interactive dashboard over a 100M-row fact table. Compare Tableau connection options and performance behaviors for this s...

Analytics & ExperimentationBI & Reporting SystemsIndexing & Query Performance
8
0
94 people solved
Oct 13, 2025
Amazon logo
Amazon
Hard
Data Scientist Locked

Explain random forests, bagging, and evaluation

This question evaluates understanding of ensemble learning and model evaluation, covering Random Forest aggregation, feature subsampling, bagging vers...

Machine Learning
7
0
69 people solved
Oct 13, 2025
OneMain Financial logo
OneMain Financial
Hard
Data Scientist

Select and tune XGBoost hyperparameters

Binary Classification Under Compute and Imbalance Constraints Context You are training an XGBoost model for a binary classification problem with: - 1,...

Machine Learning
9
0
81 people solved
Oct 13, 2025
OneMain Financial logo
OneMain Financial
Medium
Data Scientist

Differentiate and control Type I/II errors

A/B Test Powering and Error Control (Two-Proportion Z-Test) Context: You are planning a two-arm A/B test on sign-up conversion. The current baseline c...

Statistics & Math
9
0
70 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Describe leading through stakeholder conflict and ambiguity

Describe a time you had to push back on a senior stakeholder to stop a rushed launch of a metric/report or experiment you believed was invalid. Includ...

Behavioral & Leadership
11
0
81 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Handle novelty and residual effects

This question evaluates a data scientist's competency in experiment design and causal inference for online metrics under temporal dynamics, specifical...

Analytics & Experimentation
3
0
33 people solved
Oct 13, 2025
Gemini logo
Gemini
Medium
Data Scientist

Design offline backtest and online experiment

You are given an ACH transaction-level dataset to identify and control fraud and will present a plan. Today is 2025-09-01. Deliverables - Offline anal...

Analytics & Experimentation
4
0
55 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Estimate delayed CVR nonparametrically with censored data

Today is 2025-09-01. We need the 14-day conversion rate (CVR14) for impressions served between 2025-08-18 and 2025-09-01, but many conversions occur w...

Statistics & Math
10
0
72 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Compute unconnected 60s posts and reactions averages

Given these tables and sample data, write SQL that answers both tasks below. Use today = 2025-09-01 and interpret "last/past 7 days" as the inclusive ...

Data Manipulation (SQL/Python)
5
0
37 people solved
Oct 13, 2025
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